package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Employee;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategroyMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategroyServiceImpl implements CategoryService {
    @Autowired
    private CategroyMapper categroyMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 修改菜品分类
     * @param categoryDTO
     */
    public void updateCategorytype(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);
        //修改时间
        //category.setUpdateTime(LocalDateTime.now());
        //修改人
       // category.setUpdateUser(BaseContext.getCurrentId());
        categroyMapper.update(category);
    }

    /**
     * 分页查询
     * @param categoryPageQueryDTO
     * @return
     */
    public PageResult page(CategoryPageQueryDTO categoryPageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        Page<Category> page= categroyMapper.pageQuery(categoryPageQueryDTO);
        long total = page.getTotal();
        List<Category> categories = page.getResult();
        PageResult pageResult = new PageResult(total,categories);
        return pageResult;
    }

    /**
     * 启用禁用菜品
     * @param
     * @return
     */
    public void startOrStop(Integer status, Long id) {
        Category category=Category.builder()
                .id(id)
                .status(status)
                .build();
        categroyMapper.update(category);
    }

    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category=new Category();
        //对象拷贝
        BeanUtils.copyProperties(categoryDTO,category);
        category.setStatus(StatusConstant.ENABLE);
        //设置创建时间，修改时间
        //category.setCreateTime(LocalDateTime.now());
        //category.setUpdateTime(LocalDateTime.now());
        //category.setCreateUser(BaseContext.getCurrentId());
        //category.setUpdateUser(BaseContext.getCurrentId());
        categroyMapper.insert(category);
    }

    /**
     * 删除员工
     * @param id
     */
    public void deleteById(Long id) {
        //查询当前分类下有菜品，不能删除
        Integer count=dishMapper.countByCategoryId(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //查询当前分类是否关联菜品，如果关联就抛出异常
    count=setmealMapper.countByCategoryId(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categroyMapper.deleteById(id);
    }

    /**
     * 根据类型查询分类
     * @param type
     * @return
     */
    public List<Category> getByType(Integer type) {

        return categroyMapper.list(type);

    }


}
